Amphastar Pharmaceuticals, Inc. - AMPH

Sector: Healthcare · Industry: Pharmaceutical Preparations

Website: No information yet · Social: No information yet

Company profile

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Q1 2026 · Q4 2025

Value (USD)

Total reported value ($000)

$703.8M

QoQ value delta ($000)

-$196.5M (-21.83%)

Implied price effect (QoQ)

-24.73%

Total shares

34,906,122

QoQ shares delta

+1,294,477 (+3.85%)

Total shares held by funds (by quarter)

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Top 25 only Full list

Partial Q1 2026 data: 213 holders have filed so far. Prior holders are carried forward until their next 13F confirms a change.

Manager	Value ($000)	Shares	% of 13F
BlackRock, Inc.	106,204	5,421,343	0.0%
VANGUARD GROUP INC	69,846	2,608,158	0.0%
DIMENSIONAL FUND ADVISORS LP	39,726	2,027,947	0.01%
STATE STREET CORP	31,491	1,607,515	0.0%
VANGUARD CAPITAL MANAGEMENT LLC	30,240	1,543,655	0.0%
TD ASSET MANAGEMENT INC	30,189	1,541,044	0.02%
FULLER & THALER ASSET MANAGEMENT, INC.	27,330	1,395,139	0.09%
MARSHALL WACE, LLP	20,092	1,025,640	0.02%
AMERICAN CENTURY COMPANIES INC	19,933	1,017,538	0.01%
GEODE CAPITAL MANAGEMENT, LLC	19,135	976,650	0.0%
Boston Trust Walden Corp	18,508	944,789	0.15%
Epoch Investment Partners, Inc.	17,609	898,895	0.11%
VANGUARD PORTFOLIO MANAGEMENT LLC	15,433	787,816	0.0%
D. E. Shaw & Co., Inc.	13,037	665,542	0.01%
LSV ASSET MANAGEMENT	12,767	651,714	0.03%
Invesco Ltd.	11,847	604,774	0.0%
RENAISSANCE TECHNOLOGIES LLC	10,850	553,900	0.02%
SYSTEMATIC FINANCIAL MANAGEMENT LP	8,872	452,898	0.2%
MORGAN STANLEY	8,234	420,337	0.0%
UBS Group AG	8,232	420,263	0.0%
ROYCE & ASSOCIATES LP	7,956	406,175	0.08%
NORTHERN TRUST CORP	7,292	372,279	0.0%
MILLENNIUM MANAGEMENT LLC	7,275	371,373	0.0%
Bridge City Capital, LLC	6,564	335,105	1.82%
BRIDGEWAY CAPITAL MANAGEMENT, LLC	6,473	330,457	0.13%